| Official Name: | Yasti Bulagh |
| Native Name: | ياستي بولاغ |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Zanjan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khodabandeh |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Bizineh Rud |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Zarrineh Rud |
| Population As Of: | 2006 |
| Population Total: | 308 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 35.7253°N 48.2794°W |
Yasti Bulagh (Persian: ياستي بولاغ, also Romanized as Yāstī Būlāgh; also known as Yāstī Bolāgh and Yāsu Bulāq) is a village in Zarrineh Rud Rural District, Bizineh Rud District, Khodabandeh County, Zanjan Province, Iran. At the 2006 census, its population was 308, in 54 families.